Burner control apparatus



Aug. 4, 1936.

Big i E. D. JONES ET AL BURNER CONTROL APPARATUS Original Filed 001:. 5, 1955 2 Sheets-Sheet 1 EDWARD D- JoNEs 1/// WILLIAM RTELLER w .LNVLMTOR 5T ATTORN-EY5 Aug. 4, 1936. E. D. JONES ET AL 2,049,959

BURNER CONTROL APPARATUS Original Filed Oct. 5, 1933 2 Sheets-Sheet 2 I7'\\\ 2 l \"I Y' $44 v 45% 15 4 I 42 4 55 g I 14 w 4. {i w 42 a? 50 1 2! inwAao D. Jonas d/i/ WmuAM R H-ER INVNTOR$ AT'TQR n s-fa Patented Aug. 4, 1936 UNITED STATES PATENT OFFICE BURNER CONTROL APPARATUS Application October 5, 1999, Serial No. 692,294 Renewed June 13, 1936 15 Claims. (Cl. 158117.1)

This invention relates to control apparatus particularly suitable for use in connection with.

gas burners and the like, and wherein valve control means are provided which are operable automatioally to interrupt the supply of fuel to a burner, should the burner flame be extinguished while fuel is being supplied to said burner. F

In the drawings accompanying this specification and forming a part of this application, we

have shown, for purposes of illustration, certain forms which our invention may assume.

In these drawings: Figure 1 is a fragmentary top plan view 01' an embodiment of the invention,

Figure 2 is a vertical sectional view corresponding substantially to the line 2-2 of Figure l, and showing parts in elevation, I

Figure 3 is an enlarged fragmentary vertical sectional view corresponding substantially to the line 3-3 of Figure 1, and showing the control means in the position occupied when no fuel is being supplied to the burner,

Figure 4 is a. fragmentary vertical sectional view corresponding substantially to the line 4-4 of Figure 3, Figure 5 is an enlarged fragmentary vertical sectional view similar to Figure 3, and showing.

the control means in the position occupied after a flame has been established at the burner and during the time fuel is being supplied to said burner, while Figure 6 is a fragmentary vertical sectional view corresponding substantially to the line 9-6 01' Figure 5.

35 The embodiment of the invention herein disclosed comprises a burnerl9 having a mixing tube ll of a well known character connected therewith and adapted to receive fuel through a nozzle l2 communicating with a bore I3 extend- 0 ing transversely entirely through a valve casing l4 and communicating through a nipple IS with a source of fuel supply which may be in the form of a manifold l6.

Reciprocably mounted in a bore l1 intersecting the bore I3 is a valve member I9 having an annular groove l9 adapted to register'with the bore l3, extending outwardly of the casing and into a housing 20 and provided with a "collar 2| between which and the wall of the casing i4 is .50 interposed a spring 22, normally urging the valve member outwardly away from the casing, and beyond the collar 29 the valve has a rounded end portion 23.

Disposed coaxially in line with the valve mem- 55 ber l8, and reciprocably mounted in a tubular extension 24 carried by the housing 29, is a rod 25, the outer end of which has threaded thereon an abutment member 26 having an annular depression for the reception of the bifurcated end of a bi-metallic thermostatic element 21 which ex- 5" tends in loop formation as indicated at 28 to a position adjacent to the burner i9 and has its opposite end rigidly fixed to an angular bracket 29 carried by the outer end of the tubular extension 24.

The valve casing' i4 is also provided with atapered bore for the reception of a rotatable valve member 39 having a handle 3| by means of which the valve member 30 may be rotated, and the valve member 39 is also provided with a ll transverse diametrically extending bore 32 adapted in one position of the rotatable valve member 30 to register with the bore l3. The reduced end of the valve member 30 isprovided with a cylindrical extension 33, having a threaded por- 20 tion 34 and having a still further reduced extension 35, the valve member 39 being held tightly in position by a spring 36 interposed between a collar 31 threaded upon the. threaded portion 34 and a washer 38 disposed about the cylindrical 25 extension 33 and abutting the adjacent wall of the casing l4.

Rotatably and slidably mounted upon the reduced extension is an arm 39 having an enlarged portion 49 at its end and provided with an 30 oifset flange 4| adapted in one position to bear against the rounded end portion 23 of the valve member i8, and the arm 39 is normally urged to swing in a counter-clockwise direction, as viewed in Figures 4 and 6, through the medium of a tor- 35 sion spring 42 connected at one end thereto, surrounding the reduced extension 35, and having its opposite end connected to a pin 43 extending transversely of the path of movement of the arm 39 and carried by a laterally projecting member 44 threaded onto the threaded portion 34 of the cylindrical extension and held in position by a -lock nut 45, and outward movement of the arm 39 is limited by a cotter pin 46 extending through the end portion of the extension 35.

A pilot burner 41 is provided receiving its fuel supply through a conduit 48 leading to the manifold I 6, and an ignition device 49 extends between the burner I0 and the pilot burner.

The normal position of the mechanism of the 50 deviceis as shown in Figures 3 and 4, with the groove l9 of the reciprocable valve member ill in registry with the bore l3, and the bore 32 0f the rotatable valve member 30 out of registry with the bore l3. c5

Assuming the pilot burner 41 to be burning, and it is desired to supply gas to the burner III, the rotatable valve member is rotated by manipulation of the handle 3| to bring the bore 32 into registry with the bore l3 through the valve casing l4. Rotation of, the rotatable valve member also rotates the laterally projecting member 44 which moves away from the arm 39, resulting in an increase in the torsional effect of the spring 42 upon the arm, and the arm therefore is strongly urged against the adjacent end of the rod 25. The burner l0 having been ignited, the heat therefrom influences the bimetallic thermostatic element 21 to cause the end thereof connected to the rod 25 to move toward the left as viewed in Figure 2 and pull the rod therewith, resulting in a gap between the inner end of the rod 25 and the rounded end portion 23 of the valve member l8, and when the gap enlarges to a sumcient extent, the enlarged portion 40 of the arm will move into the gap with the offset flange ll bearing against 'the rounded end portion 23 of the valve [8 to limit movement of the arm. Should the burner 10 be accidentally extinguished, cooling thereof will result in the thermostatic element 21 assuming its initial position, and moving the rod 25 to the right, as viewed in Figure 2, and the arm 33 now being interposed between the inner end of the rod and the valve member l8, will result in the valve member l8 being moved toward the right as viewed in Figure 3, carrying the groove IQ of. the valve I! out of registration with the bore 53, the arm 33 of course moving along the reduced extension in the same direction as the valve member i8. When the rotatable valve member 30 is closed, that is rotated to move the bore 32 out of registration with the bore l3,' the pin 43 comes into contact with the arm 33 and moves it outwardly from its position between the end of the rod 25 and the rounded end portion 23 of the valve ll,

permitting the valve [8 again to assume its position with the annular groove IS in registry with the bore l3, and also permitting the arm again to move along the extension 35 to its initial position, after which the device is operated as before described.

It will be apparent to those skilled in the art that the embodiment herein disclosed accomplishes at least the principal object of this invention, but also, that the construction is adaptable to other uses, and embodies advantages other than those herein particularly mentioned, and

also, that the particular embodiment described between; and means interposable in said gap to prolong said actuating means upon its subsequent movement toward said valve to effect operative movement of said valve.

2. A device of the character described, comprising: valve mechanism having a valve casing and a movably mounted valve; actuating means, constructed to move to and fro, toward, but short of dislodging engagement with said valve, and

away from said valve, sumciently to leave a gap therebetween; means interposable in said gap to prolong said actuating means upon its subsequent movement toward said valve to effect operative movement of said valve; and means normally biasing said interposable member in a direction to enter said gap when it is formed.

3. A device of the character described, comprising: valve mechanism having a valve casing and a movably mounted valve; actuating means, constructed to move to and fro, toward, but short of dislodging engagement with said valve, and away from said valve, sufficiently to leave a gap therebetween; means mounted to swing at an angle to the direction of movement of said actuating means, and shiftable in a direction coinciding with the direction of movement of said actuating means, said means being interposable in said gap to prolong said actuating means upon its subsequent movement toward said valve to effect operative movement of said valve; and means normally biasing said interposable member in an angular direction to enter said gap when it is formed.

4. A device of the character described, comprising: valve mechanism having a valve casing and a movably mounted valve; actuating means, con-' structed to move to and fro, toward, but short of dislodging engagement with said valve, and away from said valve, sufllciently to leave a gap therebetween; means interposable in said gap to prolong said actuating means upon its subsequent movement toward said valve to effect operative movement of said valve; a second valve means having a movable valve member; and means operable by movement of said second valve member for controlling the operative position of said interposable member with respect to said actuating means.

5. A device of the character described, comprising: valve mechanism having a valve casing and a movably mounted valve; actuating means, constructed to move to and fro, toward, but short' of dislodging engagement with said valve, and away from said valve, sufficiently to leave a gap therebetween; means interposable in said gap to prolong said actuating means upon its subsequent movement toward said valve to effect operative movement of said valve; a second valve means having a movable valve member; and means operable by'opening movement of said second valve member for placing said interposable member in operative position with respect to said actuating means, and operable by closing movement there-' of to retract said interposable member from said operative position.

6. A device of the character described, comprising: a burner; a conduit for conducting fluid to said burner; safety valve mechanism cooperable with said conduit, having a valve casing and a movably mounted valve having means normally biasing said valve to open position to permit passage of fluid to said burner; means including actuating means responsive to the heat of a flame at said burner, and operable when said burner is not burning to move toward, but short of dislodging engagement-with said valve, and operable to move away from said valve when said burner is burning, sufficiently to leave a gap between said actuating means and said valve; and means automatically interposable in said gap to prolong said actuating means upon its subsequent movement toward said valve to effect oper-. ative movement of said valve and cut of! flow of fuel to said burner.

7. A device of the, character described, comprising: a burner; a conduit for conducting fluid to said burner; safety valve mechanism cooperable with said conduit, having a valve casing and la flame at said burner, and operable when said burner is not burning .to move toward, but short of dislodging engagement with said valve; and operable to move away from said valve when said burner is burning, sufliciently to leave a gap between said actuating means and said valve; and means automatically interposable in said gap to prolong said actuating means upon its subsequent movement toward said valve to effect operative movement of said valve and out oil flow of fuel to said burner. 8. A device of the character described, comprising: -a burner; a conduit for conducting fluid to said burner; safety valve mechanism cooperable with said conduit, having a valve casing and a movably mounted valve having means normally biasing said valve to open position for permitting passage of fluid to said burner; means including actuating means responsive to the heat of a flame at said burner, and operable when said burner is not burning to move toward, but short of dislodging engagement with said valve, and operable to move away from said valve when said burner is burning, sufliciently to leave a gap between said actuating means and said valve; means automatically interposable in said gap to prolong said actuating means upon ,its subsequent movement toward said valve to effect oper ative movement of said valve and cut off flow of fuel to said burner; a second valve means having a manually controllable valve member; and means operable by movement of said second valve member for controlling the operative position of said interposable member with respect to said actuating means. 9. A device of the character described, comprising: a burner; a conduit for conducting fluid to said burner; safety valve mechanism cooperable with said conduit, having a valve casing and a movably mounted valve having means normally biasing said valve to open position for permitting passage of fluid to said burner; means including actuating means responsive to the heat of a flame at said burner, and operable when said burner is not burning to move toward, but short of dislodging engagement with said valve, and operable to move 'away from said .valve when said burner is burning, sufllciently to leave a gap between said actuating means and said valve; means automatically interposable in said gap to prolong said actuating means upon its subsequent movement toward said valve to eflect operative movement of said valve and cut off flow of fuel to said burner; a second valve means having a manually controllable. valve member; and means operable by movement of said second valve member for placing said interposable member in operative position with respect to said actuating means when said second valve member is opened. and for retracting said interposable member from operative position when said second valve member is closed.

10. A device of. the character described, comprising: a burner; a conduit for conducting fluid to said burner; safety valve mechanism coperable with said conduit, having a valve casing and a movably mounted valve having means normally biasing said valve to open position for per-- mitting passage of fluid to said burner; thermostatically operatedactuating means, responsive, to'the heat of a flame at said burner, and operable when said burner is not burning to move toward, but short of dislodgingengagement with said valve, and operable to move away from said valve when said burner is burning, sufliciently to leave a gap between saidactuating means and said valve; means automatically interposable in said gap to prolong said actuating means upon its subsequent movement toward said valve to effect, operative movement of said valve and cut oil flow of fuel to said burner; a second valve means having a manually controllable valve member; and means operable by movement of said second valve member for placing said interposable member in operative position with respect to said actuating means when said second valve member is opened, and for retracting said interposable member from operative position when said second valve member is closed.

11. A device of the character described, comprising: a burner; a conduit for conducting fluid to said burner; safety valve mechanism cooperable with said conduit, having a valve casing anda movably mounted valve having means normally biasing said valve to open position for permitting passage of fluid to said burner; thermostatically operated actuating means, responsive to the heat of a flame at said burner, and operable when said burner is not burning to move toward, but short of dislodging engagement with said valve, and operable to move away from said valve when said burner is burning, suiiiciently to leave a gap between said actuating means and said valve; means interposable in said gap to prolong said actuating means upon its subsequent movement toward said valve to effect operative movement of said valve and cut off flow of fuel to said burner; means for mounting said interposable member to swing at an angle to .the direction of movement of said actuating means, and to shift in a direction coinciding with the direction of movement of said actuating means; means normally biasing said interposable member in the direction of its angular movement and toward said actuating means; a second valve means having a manually controllable valve member; and means operable by movement of said second valve member for placing said interposable member in operative position with respect to said actuating means when said second valve member is opened, and for retracting said interposable member from operative position when said second valve member is closed.

12. A device of the character described, comprising? a burner; a conduit for conducting fluid to said burner; safety valve mechanism cooperable with said conduit, having a valve casing and a movably mounted valve, and having means normally biasing said valve to open position to permit passage of fluid to said burner; thermostatic means disposed in juxtaposition with reference to said burner and responsive to the heat of a flame at said burner; actuating means, adjustably connected to said thermal means, and operable when said burner is not burning to move toward, but short of abutting engagement with said valve, and operable to move away from said valve, when said burner is burning, suiiiciently to leave a gap between said actuating means and said valve, said adjustable connection providing for adjustment in said movement; and means automatically interposable in said gap to prolong said actuating means upon its subsequent moveactuating said valve means; and means forming 4 ment toward said valve to effect operative movement of said valve and cut off flow of fuel to said burner.

'13. A device of the character described, comprising: a burner; a conduit for conducting fluid to said burner; valve means interposed in said valve mechanism when said burner is burning,

sumciently to leave a gap between said actuating means and said valve; and means automatically interposed in said gap, to prolong said actuating means upon its subsequent movement toward said valve mechanism to effect operative movement of said'valve mechanism to cut off flow of fuel to said valve means.

l4; A device of the character described, comprising: burner means; fuel supply means for said burner means; valve means for controlling passage of fuel through said fuel supply means; actuating means, movable to and fro, adapted for an operative connection between said-actuating means and said valve means, said connection hav-r ing a lost motion device permitting said actuating means to move in one direction without disturbing said valve means, and constructed to effect move- 6 ment of said valve means when said actuating means move in a reverse direction.

15. A device of the character described, comprising: burner Y means; fuel supply means for said burner'means; first valve means for controlling passage of fuel through said fuel supply means; actuating means movable to and fro, adapted to actuate said first valve means; means forming-an operative connection between said actuating means and said first valvemeans, said 15 connection having a lost motion device constructed to permit said actuating means to move in one direction without disturbing the position of said first valve means, and constructed to effect movement of said first valve means when said 20 actuating means move in a reverse direction; and

manually operable valve means also for control- 

